Teaching CSIR NET Mock Test Series Mathematical Science Algebra Polynomial Rings and Irreducibility Criteria
Let ℤ[X] be the ring of polynomials over integers. Then the additive group ℤ[X] is
1
isomorphic to the multiplicative group ℚ+ of positive rational numbers.
2
isomorphic to the group of rational numbers ℚ under addition
3
countable
4
uncountable